Regeneration of Spent Resid Fluidized Catalytic Cracking Catalyst by Removing Metal Poisons Such as V, Ni, and Fe

Park, Sang Ku; Jeon, Hee Jung; Jung, Kwang S.; Woo, Seong Ihl

doi:10.1021/ie020515u

Cited by 12 publications

(6 citation statements)

References 7 publications

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“…Vanadium also deposits on the catalyst surface, but unlike nickel migrates through the catalyst and reacts with zeolites and rare-earth metals forming vanadate complexes, which easily destroys the zeolites. Vanadium contamination reduces conversions 3-4 times, reduces gasoline yield about 1.2 times and increases hydrogen and coke yields 0.3-0.4 times as much as nickel [12]. Also, sulfur and nitrogen in the FCC feedstock lead to SO x and NO x emissions in the regenerator and into distillates and must be controlled.…”

Section: Fcc Operating Variables and Fcc Feedstockmentioning

confidence: 99%

Perspective on FCC catalyst in China

Feng,

Qiao,

Wang

et al. 2013

Appl Petrochem Res

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This paper provides an overview of the enormous challenge in processing heavier fluid catalytic cracking (FCC) feedstock and producing higher qualified liquid fuels. Besides optimizing the operation conditions of the FCC unit, it is crucial to design new catalysts especially for heavier and inferior feedstock. In this paper, a new concept, stepwise structure of catalyst, was postulated and a potential new catalyst based on stepwise structure design was prepared.

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Section: Fcc Operating Variables and Fcc Feedstockmentioning

confidence: 99%

Perspective on FCC catalyst in China

Feng,

Qiao,

Wang

et al. 2013

Appl Petrochem Res

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“…Metals, usually nickel and vanadium, can be present in oil in concentrations ranging from 10–2000 ppm (μg/g) . In spite of the relatively low concentration, the effects of nickel and vanadium on oil processing are significant and lead to decreased yields, corrosion, lower quality of products, and ultimately to catalyst deactivation …”

Section: Introductionmentioning

confidence: 99%

Ni and V removal from oil and model compounds without hydrogenation: Natural chabazite as solid acid

et al. 2016

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Recently, natural chabazite was identified as a catalyst for a novel thermocatalytic oil upgrading process. To further develop this process, it is essential to understand the chemical reactions involved. In this study, up to 67.5 % vanadium removal from oil sands bitumen is obtained without adding hydrogen. Using model compounds, vanadium removals up to 47.9 % and nickel removals up to 3.4 % were obtained after a 1 h reaction at 400 °C. Nickel removal up to 90.0 % at equilibrium and room temperature was observed. Evidence of free‐base porphyrin formation is presented. It was also found that chabazite can catalyze the dealkylation of octaethylporphyrins. The results presented here allow for a better understanding of the chemical properties of chabazite and open the possibility for the creation of pretreatment processes that can remove metals and modify the structure of petroleum‐derived fractions without using hydrogen or rejecting substantial amounts of usable oil.

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“…V in higher oxidation states (e.g., V 5? ) also catalyzes dehydrogenation reactions and, more importantly, at oxidative conditions of the regenerator and the presence of high temperature (i.e., *913-1,008 K) steam may produce mobile, aggressive species such as vanadic acid [11]. The latter penetrates into the catalyst pores and hydrolyzes the Al-O-Si bonds of the zeolite crystals leading to the collapsing of its structure [12,13].…”

Section: Introductionmentioning

confidence: 99%

Cyclic Deactivation with Steam of Metallated Cracking Catalysts: Catalytic Testing at the Bench Scale and the Pilot Scale

et al. 2011

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Besides offering an adequate product distributions, a cracking catalyst must exhibit a reasonable resistance to the combined effect of high temperature, steam and metals. Two commercial catalysts, poisoned with Ni ? V (*2,500 ppm), are subjected to a large scale cyclic deactivation with steam, then characterized using mostly basic techniques and finally tested via bench scale and pilot scale cracking experiments. As examples of industrial deactivation, corresponding equilibrium catalysts (E-CATs) are investigated in parallel. Depending on their specific formulation, catalysts deactivate differently due to the exposition to high temperature steam and metals. The intrinsic deviations in the catalytic properties of cyclic deactivated catalysts (CD-CATs) related to E-CATs are further biases by the particular history of the latter and the particular reactor configuration and hydrodynamics, such deviations being magnified in the bench scale testing. Relative differences in activity and product yields (except for coke and hydrogen) of CD-CATs referred to E-CATs are below 10% at the pilot scale, and within 23% at the bench scale. Relative biases in hydrogen and coke yield of may be as high as 75 and 26% in the pilot plant and as much as 150 and 32% at the bench scale.

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Regeneration of Spent Resid Fluidized Catalytic Cracking Catalyst by Removing Metal Poisons Such as V, Ni, and Fe

Cited by 12 publications

References 7 publications

Perspective on FCC catalyst in China

Perspective on FCC catalyst in China

Ni and V removal from oil and model compounds without hydrogenation: Natural chabazite as solid acid

Cyclic Deactivation with Steam of Metallated Cracking Catalysts: Catalytic Testing at the Bench Scale and the Pilot Scale

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